On Sun, 22 Mar 2009 08:52:43 +0100 Matthieu Herrb <mhe...@gmail.com>
wrote:
> > Are there a list of graphic-chips where i could see which chipsets
> > support the DRI/DRM-feature under OpenBSD?
>
> DRI/DRM on OpenBSD works on recent intel chips (i855 and up) and on
> older ATI chips (r200/r300).
I don't know if the above was a typo or not, but I do *seem* to have DRI
and DRM functioning properly with the i845 chipset. None the less, I'm
uncertain if there is actually support for i845 in our DRM driver?
I'm still tinkering and testing the new intel(4) driver with the i845
system but it seems I've isolated the major problem that makes X
unusable on the i845. The short answer is the driver does "Bad Things"
when you allow it to do DDC2. It works fine with DDC1 enabled. Shutting
off DDC2 support solves just about all the problems.
Option "DDC2" "false"
I do not understand why this works, by my current hunch is it has to do
with the "rescaling" the new intel(4) driver does when faced with fixed
resolution LCD's (discovered via DDC2).
--
J.C. Roberts
